Kuji magic. Lost Ninja art or media inspired nonsense?

Today I will be discussing the topic of the ancient art of Kuji. Kuji were spells said to be cast by the Ninja long ago. While many aspects of the Ninja lifestyle are surrounded in mystery many of them really have had more place in mythology. Kuji magic for instance, The ability to control and create effects of nature. Examples are creating spontaneous combustion and passing into the plane of spirits.The existence of Magic (for you bible believers) has been confirmed in the book of exodus when moses brings the 7 plagues upon egypt. upon several of the plagues it states that "they could do the same with their incantations" and if you believe in the bible "which I do" This is a clear statement of the existence of magic. While its nature may be somewhat sinister its existence is absolute. However many kuji spells seem more a matter of psychic abilities such as pyrokinesis electrokinesis and astral projection. Based on these facts the existence of Kuji magic is completely feasible. On the reverse side, many of the abilities (such as disappearing into the spirit realm) seem largely a matter of a primitive understanding of stealth and the body,s physical capabilities. Running up walls was believed to be a supernatural ability then, but now it is well known to be possible with enough agility training. They also were believed to be able to put up invisible "shields" of Magic, able to stop any bladed weapon dead in its tracks, It was later discovered that the ninja in fact had placed small spiked iron bars across the palms of their hands. This invention of weapons by the ninja and only for the ninja was part of what led people to believe they had supernatural powers. Now Does kuji magic really exist? There can be no absolute answer. The only thing that is sure is that there are no known users of kuji magic in the modern world. So unfortunately the matter cannot be confirmed nor denied. But hopefully I was able to help you make a decision on your own beliefs on the existence of Kuji magic...